Module: ExpoTurbo::Rails::RegistryIdentifier

Defined in:
lib/expo_turbo/rails/registry_identifier.rb

Class Method Summary collapse

Class Method Details

.noncharacter?(codepoint) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/expo_turbo/rails/registry_identifier.rb', line 34

def noncharacter?(codepoint)
  codepoint.between?(0xFDD0, 0xFDEF) ||
    (codepoint <= 0x10FFFF && [0xFFFE, 0xFFFF].include?(codepoint & 0xFFFF))
end

.valid?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/expo_turbo/rails/registry_identifier.rb', line 27

def valid?(value)
  validate!(value, "value")
  true
rescue ConfigurationError
  false
end

.validate!(value, field_path, error_class: ConfigurationError) ⇒ Object 



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# File 'lib/expo_turbo/rails/registry_identifier.rb', line 8

def validate!(value, field_path, error_class: ConfigurationError)
  unless value.is_a?(String)
    raise error_class,
      "Expo Turbo registry identifier #{field_path} must be a String, got #{value.class}"
  end
  unless value.valid_encoding?
    raise error_class, "Expo Turbo registry identifier #{field_path} is not valid UTF-8"
  end

  value.each_codepoint.with_index do |codepoint, scalar_index|
    next unless noncharacter?(codepoint)

    formatted = codepoint.to_s(16).upcase.rjust(4, "0")
    raise error_class,
      "Expo Turbo registry identifier #{field_path} contains Unicode noncharacter U+#{formatted} at scalar index #{scalar_index}"
  end
  value
end